Paul Leland Kirk (May 9, 1902 – June 5, 1970[1][2]) was a chemist, foensic scientist and participant in the Manhatten Project who was specialized in microscopy.He also investigated the bedroom in which Sam Sheppard supposedly murdered his wife and provided the key blood spatter evidence that led to Sheppard's acquittal in a retrial over 12 years after the murder. The highest honor one can receive in the criminalistics section of the American Academy of Forensic Sciences carries Kirk's name.
Paul Kirk Forensic Speech
Paul Kirk
1902-1970
This information is from http://en.wikipedia.org/wiki/Paul_Kirk.